Dozens of people on Twitter are writing digital and handwritten love letters for Valentine’s Day, and they’re signing them with #ToImmigrantsWithLove.

The letter writing campaign was first launched in December by Define American, a non-profit pro-immigrant organization, and Welcome.us’ I Am An Immigrant movement. On Tuesday, the campaign revived their hashtag for what they’re calling a Day of Action.

“There’s never been a more important time in modern U.S. history to stand in solidarity with immigrants across our country,” undocumented activist Jose Antonio Vargas, founder and CEO of Define American, said in a press release. “This campaign comes at a crucial time not only for millions of immigrants who call America home but for the millions of American citizens and permanent residents whose lives are connected to ours. We are an immigrant nation and we love our immigrants. Let’s show it.”

Politicians, celebrities, activists and more shared their messages of love for immigrants on Tuesday, including Russell Simmons, Constance Wu, Debra Messing, George Takei, singer Estelle, U.S. Representative Judy Chu and U.S. Representative Jamie Raskin.

Take a look at some of our favorite photos and letters #ToImmigrantsWithLove below.